%I A001532 M0852 N0324
%S A001532 1,1,2,3,7,21,135,2470,175428
%N A001532 Number of self-dual equivalence classes threshold functions of n or fewer 
               variables.
%D A001532 S. Muroga, Threshold Logic and Its Applications. Wiley, NY, 1971, p. 
               38, Table 2.3.2. - Row 23.
%D A001532 S. Muroga, T. Tsuboi and C. R. Baugh, Enumeration of threshold functions 
               of eight variables, IEEE Trans. Computers, 19 (1970), 818-825.
%D A001532 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001532 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A001532 Sequence in context: A032223 A002863 A047693 this_sequence A109456 A155745 
               A067738
%Y A001532 Adjacent sequences: A001529 A001530 A001531 this_sequence A001533 A001534 
               A001535
%K A001532 nonn
%O A001532 0,3
%A A001532 N. J. A. Sloane (njas(AT)research.att.com).